clearsky.blog/layouts/_default/_markup/render-image.html
2022-04-03 16:52:16 +02:00

63 lines
2.0 KiB
HTML

{{/* Original code from: https://laurakalbag.com/processing-responsive-images-with-hugo/ */}}
{{/* Just modified a bit to work with render_image hook and output webp images */}}
{{/* get file that matches the filename as specified as src="" */}}
{{ $src := .Page.Resources.GetMatch (printf "%s" (.Destination | safeURL)) }}
{{ $alt := .PlainText | safeHTML }}
{{/* So for posts that aren't setup in the page bundles, it doesn't fail */}}
{{ if $src }}
{{ $tinyw := default "500x webp" }}
{{ $smallw := default "800x webp" }}
{{ $mediumw := default "1200x webp" }}
{{ $largew := default "1500x webp" }}
{{/* resize the src image to the given sizes */}}
{{/* We create a a temp scratch because it's not available in this context */}}
{{ $data := newScratch }}
{{ $data.Set "tiny" ($src.Resize $tinyw) }}
{{ $data.Set "small" ($src.Resize $smallw) }}
{{ $data.Set "medium" ($src.Resize $mediumw) }}
{{ $data.Set "large" ($src.Resize $largew) }}
{{/* add the processed images to the scratch */}}
{{ $tiny := $data.Get "tiny" }}
{{ $small := $data.Get "small" }}
{{ $medium := $data.Get "medium" }}
{{ $large := $data.Get "large" }}
{{/* only use images smaller than or equal to the src (original)
image size, as Hugo will upscale small images */}}
<figure>
<a href="{{ $src.RelPermalink }}">
<picture>
<source media="(max-width: 376px)"
srcset="{{with $tiny.RelPermalink }}{{.}}{{ end }}">
<source media="(max-width: 992px)"
srcset="{{with $small.RelPermalink }}{{.}}{{ end }}">
<source media="(max-width: 1400px)"
srcset="{{with $medium.RelPermalink }}{{.}}{{ end }}">
<source media="(min-width: 1600px)"
srcset="{{with $large.RelPermalink }}{{.}}{{ end }}">
<img
alt="{{ $alt }}" title="{{ $alt }}" src="{{ $src }}"
class="img-fluid">
</picture>
</a>
<figcaption>{{ .Title | markdownify }}</figcaption>
</figure>
{{/* Since I do image-response class, the only thing that really
matters is the height and width matches the image aspect ratio */}}
{{ end }}